Improvement in the process of manufacturing twine from paper



NITED STATES PATENT Grrrcn.

E. B. BINGHAM, OF NEWARK, NEW JERSEY.

IMPROVEMENT IN THE PROCESS OF MANUFACTURING TWINE FROM PAPER.

Specification forming part of Letters Patent N0.' 16,208, dated February 7, 1865.

To all whom it may concern:

Beit known that I, E. B. BINGHAM, of Newark, in the county of Essex and State of New Jersey, have invented a new and Improved Process for Manufacturing Twine from Paper; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same.

Owing to the high price of the. stock from which twine for tyiugnp parcels-andforsimilar purposes was previously wholly manufactured, there has recently been used in this country a new material to serve as a stock for that purpose-to wit, t ssue Manila paper. At present this paper is cut into strips of a proper width, and then twisted into twine of the required size by an ordinary spinning-frame or' any suitable spinning machinery. This twine as at present manufactured answers tolerably well for ordinary purposes, if kept free from moisture. It is of sufticient strength for tying up small parcels, but if subjected to a slight moisture it instantly breaks. This contingencyis the only objection to the paper twine, which would otherwise becomegenerally used. At present it is used in the majority of cases where it can be with safety, and in some cases where it should not be employed, causing the purchaser or carrierof parcels great annoyance and inconvenience.

The object of my invention is to manufacture this paper twine by a new process, which will render the same, if not entirely waterproof, sufficiently so to resist moisture in an eminent degree, and thereby obviate the difficulty above alluded to.

My invention consists in adding to the pulp in the process of manufacturing the paper a water-proof sizing. Shellac dissolved in alcohol, or an alkali commonly termed shellac varnish, will answer the purpose; or a sizing may be applied to the wet or green'paper while on the frame or web, or at any time previous to the passing of the same between the last heated rollers. This paper thus manufactured, whether .sized in the pulp or in the unfinished sheet, is cut into strips and twisted into twine while in a moist state before it becomes dried.

In order to manufacture an even twinefor it will be understood that the twine manufacturers all manufacture paper twine from finished marketable paper. The moistening of the dry paperjust previous to twisting assists the twisting operation; but the twine does not have that smooth appearance, nor the compactness nor toughness, that mine has, owing l0 the lack of homogeneonsness of the fiber, for paper when dried by the heated rollers has its fibers all smoothed down, and temporary subsequent moisture will tend to destroy this smoothness.

My improvement produces a very strong, smooth, and even twine, and the water-proof sizing,iu consequence of being mixed with the pulp or applied to the green or moist paper on the frame or web of the machine, becomesincorporated with all the fibers of the twine or mass, and while rendering the twine waterproof or enabling it to resist moisture sufficiently for ordinary use, or the purpose for which itis designed, will not make the twine at all rigid or stiff, nor liable to crack or shell off, as would be the case were it applied externally alter manufacture.

It will not here be necessary to mention any apparatus or machinery for cutting and spinning the paper, inasmuch as any of the spin ning-frames now in use for similar or analogous purposes may be used, and also any proper cutting apparatus.

Having thus described my invention, what I claim as new, and desire to secure by, Letters Patent, is-- In the manufacture of twine from paper, adding a water-proof sizing t0 the paper pulp or applying the same to the paper while the latter is in a moist or green state on the frame or web previous to its passage through the final heated pressure-cylinders, and previous to its being cut into strips and receiving its twist, as herein set forth.

E. B. BINGHAM. Witnesses:

B. HooeLAND, JOHN H. WHITE. 

